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印制板用铜箔试验机作业新标发布GB/T 29847-2013

作者：來源：发布日期： 2020.10.21

信息摘要：

印制板用铜箔试验机作业新标发布GB/T 29847-2013

国标GB/T 29847-2013印制板用铜箔试验方法已经发布，将于2014年4月15日起实施，这将为铜箔产品的检测试验提供标准，其对于试验机配置及检测作业也提出了完整要求。

銅箔按工藝科分爲電解箔和壓延箔兩種，按質量保證水平大概分爲三級，1級用于電路功能完整，機械性能和外觀缺陷不重要的場合；2級用于電路設計、工藝和規範一致性要求允許局部不一致的應用場合；而三級用于質量保證等級最高的應用場合，比如軍用電子設備等。

其物理性能要求測試拉伸強度、疲勞延展性、延伸率、剝離強度等指標，需通過拉力試驗機來配合完成測試。

下圖爲銅箔的物理性能要求表：

GB/T 29847-2013印制板用铜箔试验方法是首次推出，这为相关企业质量保证提供了参照标准，有利于企业使用试验机完成检测试验时的作业规范。

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The Curate, of course, had heard nothing about the Clockwork man's other performances; he had scarcely heeded the hints thrown out about the possibility of movement in other dimensions. It seemed to him, in the uncertain light of their surroundings, that the Clockwork man's right arm gradually disappeared into space. There was no arm there at all. Afterwards, he remembered a brief moment when the arm had begun to grow vague and transparent; it was moving very rapidly, in some direction, neither up nor down, nor this way or that, but along some shadowy plane. Then it went into nothing, evaporated from view. And just as suddenly, it swung back into the plane of the curate's vision, and the hand at the end of it grasped a silk hat. Good fitting is often not so much a question of skill as of the standard which a workman has fixed in his mind, and to which all that he does will more or less conform. If this standard is one of exactness and precision, all that is performed, whether it be filing, turning, planing, or drawing, will come to this standard. This faculty of mind can be defined no further than to say that it is an aversion to whatever is imperfect, and a love for what [171] is exact and precise. There is no faculty which has so much to do with success in mechanical pursuits, nor is there any trait more susceptible of cultivation. Methodical exactness, reasoning, and persistence are the powers which lead to proficiency in engineering pursuits. I was the only civilian in that road, and the soldiers, with much curiosity, stared at me. Whenever I noticed an officer, I gave an elaborate military salute, and with such an air that the officers, although hesitating at first, did not fail to return the salute. The reformed system of education was to be not only moral and religious but also severely scientific. The place given to mathematics as the foundation of a right intellectual training is most remarkable, and shows how truly Plato apprehended the conditions under which knowledge is acquired and enlarged. Here, as in other respects, he is, more even than Aristotle, the precursor of Auguste Comte. He arranges the mathematical sciences, so far as they then existed, in their logical order; and his remarks on the most general ideas suggested by astronomy read like a divination of rational mechanics. That a recommendation of such studies should be put into the mouth of Socrates is a striking incongruity. The older Plato grew the farther he seems to have advanced from the humanist to the naturalistic point of view; and, had he been willing to confess it, Hippias and Prodicus were the teachers with whom he finally found himself most in sympathy. We are told that when his end began to approach, the dying philosopher was pressed to choose a successor in the headship of the School. 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